What change is observed in a distribution curve for a trait affected by directional selection? (1 point)

Question

O It shifts to the right and to the left.
• It shifts to the left
• It shifts to the right.
It shifts either to the right or to the left.

Answer 1

The correct answer is: It shifts to the right or to the left.

Directional selection favors one extreme phenotype over others, leading to a shift in the distribution curve in the direction of that phenotype. This means the curve can shift either to the right or to the left, depending on which trait is favored.